AS7018 199.105.136.0/21 CIDR and IP Range Summary.ASN: 7018 - AT&T Services Inc.Host Count: 2046Addressable IPs: 2048199.105.136.0/24199.105.137.0/24199.105.138.0/24199.105.139.0/24199.105.140.0/24199.105.141.0/24199.105.142.0/24199.105.143.0/24